chore(make): add dev shortcuts

[Copilot]

Summary

Adds cross-platform Makefile shortcuts for docker compose and testing workflows.

Changes:

• Makefile: Added up, down, logs targets; converted Windows-specific commands to Unix-compatible
• docker-compose.yml: New placeholder config for future services
• README.md: Documented all make targets in new Development section

make up        # docker compose up
make down      # docker compose down
make logs      # docker compose logs -f
make test      # pytest -q
make validate  # validate_contracts.py --check-golden

Molecule Spec

N/A - DevX tooling only

ADR Link

N/A

Contracts

• No changes
• New version added: .v2.json
• Golden tests updated

Safety

• Input validation
• Thresholds/e-stop (if applicable)
• Telemetry emitted

N/A - Build tooling only

Tests

• Unit tests
• Integration tests
• Contract validation passes

Run Ledger (for experiments)

N/A

Original prompt

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This section details on the original issue you should resolve

<issue_title>chore(make): add dev shortcuts</issue_title>
<issue_description>### Summary

Tasks

• Create Makefile at root:
  up: docker compose up
  down: docker compose down
  logs: docker compose logs -f
  test: pytest -q
  validate: python packages/monad-contracts/validate_contracts.py --check-golden

markdown
Copy code

• Document in README.

Acceptance

make up, make down, make logs, make test, make validate work cross-platform.

Area

devx

Priority

medium</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes chore(make): add dev shortcuts #16

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